Magic Astral Lamp - you need to collect shining balls from the monsters at the right bottom corner and bring them to the Lamp. It will give you a Star Stone Crystal for every 5 shiny balls. The crystals should be delivered to the Giant Star Stone. The Giant Store will open upon receiving 10 Star Stone Crystals. The room contains a bunch of shining Blue Rafflies. I got aroung 60k silver from these mobs.

There are four statues called "Astral Protector Statue". And there is a square with smaller squares tiles on its corners that pulsates light: https://gyazo.com/0fd57e1d8206912a21ecdb5d9576bcce

The goal is to light all 4 tiles. To do this you have to make sure that each of the Goddesses on top four statues are facing the right direction by rotating them. You rotate the statues by interacting with them. Once all four are facing the right direction and all tiles are lighting up, a large group of Terra Imps will spawn.

The tile that lights up DOES NOT CORRESPOND WITH THE STATUE THAT IS IN THE CORRECT POSITION. For example, If the tile in the upper left corner is lit up, it does not necessarily mean that the statue in the upper left corner is in the correct position. All it means is that there is one statue in the correct position.

I'm not sure what the significance of this place is; they don't give good exp or silver. But I did find a Zega Spear recipe on one of them, I think. I coulda killed a Blue Raffly w/o realizing

Candlestick Guide:
-4 Candlesticks will line the bottom most corridor on this map: https://gyazo.com/682ec8dc9662c31f4960387e62e21d1c262
- To light them, you need to acquire Faded Starlight Crystal by killing monsters in the area. https://gyazo.com/c5bbd03d5569a796d4816acd0293f8bd407
- An Astral Blessing will Light up - but no idea what it does yet